Module M09 - Participatory Scale Mapping and Surveying

Unit M09U02 - Data Collection for Scale Mapping

Introduction

This Unit begins with an overview of different tools and methods for
collecting data to make scale maps. It provides a perspective on
how methods may be selected according to the needs of the
mapping project and how they may be combined or progress into
each other.

The rest of the Unit looks at concepts relating to data quality. The
validity and credibility of a scale map rests on the quality of data
that go into it. Key elements of data integrity are the concepts of
traceability, consistency and verifiability. Making and presenting a
scale map attracts scrutiny regarding the precision of the data and
the accuracy of the map. Concepts of resolution, precision and
accuracy are discussed.

There are basic principles for recording data to ensure that the data
can be effectively used to make a credible map. When working in
the field, observations need to be written in a clear, concise and
systematic way so they are legible for the map makers to work with
in drawing the map.

Unit objectives / expected outcomes

After completion of the Unit the trainee will be able to:

describe a variety of simple and complex ways to make
scale maps;

select an appropriate method of data collection for making
scale maps for a particular situation;

discuss and apply concepts and best practices for quality
data collection;

Equipment needed

Computer and beamer, notebook, pencil and eraser for each
participant, table or flat ground surface to work on, graph paper,
ruler, (tape measure if making larger layouts on the ground), 10 or
so objects of different size and shape to be placed around on the
surface.